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Glad you are happy. Personally, I would prefer 78^F, 45%RH. A properly set up simple a/c with a small whole dehumidifier would provide this using less energy. Less of an investment and lower operating cost.
Also will be interested in hearing about your %RH with cool wet weather. Also many duct systems do not provide uniform air distribution throughout the home during low air flow. Also during the off cycle, interested in observation of the moisture re-evaporation of the moisture on the large coil back into the home.
Keep us posted.
Regards TB

TB, I don't want to sound ungrateful for your advice, or to be argumentative, but I have to quote what I said in an earlier post:

"I don't see how such a unit could be installed near the ahu in my laundry room.... also wouldn't want to add another $15 a month to my electric bill.

I also don't see a need for additional ventilation in my house. Two separate infiltrometer tests have shown that my existing ventilation exceeds the ASHRAE minimum, with duct leakage at less than 5%.

So far, the Green Speed dehumidification has cost me almost nothing! I mean my kWh usage for the 2 months since installation is as low as it's EVER been... less than in ANY prior year duing months when NO A/C or heat was used (usually Dec & Feb)."

Furthermore, I haven't noticed any "re-evaporation back into the home" during the "off cycle". Like I said, the unit runs pretty much all the time on the lowest speed for dehumidification. The fan is set to "auto" so it doesn't blow across the coil when the unit is not cooling or dehumidifying. Therefore, when it's not running, any moisture on the coil drips into the condensate drain and doesn't "re-evaporate".

And lastly, my contractor "tweaked" my ductwork to provide almost perfect airflow distribution throughout the home. I chose him because he was an honest-to-goodness expert who wasn't too "know-it-all" to listen to what I was telling him about my previous airflow imbalance. The unit runs at minimum cfm pretty much all the time and the airflow is balanced from the front guest quarters to the back "add-on" office and everywhere in between throughout my long, narrow floor plan.

ASHRAE STD 55 IS A GREAT GUIDE IN ADDRESSING VARIOUS CONDITIONS OF COMFORT

Originally Posted by teddy bear

Glad you are happy. Personally, I would prefer 78^F, 45%RH. A properly set up simple a/c with a small whole dehumidifier would provide this using less energy. Less of an investment and lower operating cost.
Regards TB

LISTENING to the Customer is the Most Important Attribute of a Technician or Salesperson.

COMFORT IS DESCRIBED BY A VAST RANGE OF CONDITIONS. Reference - ASHRAE 55

80'F and 42% R.H. is fine with me
in a Family Room environment or
on a 30 mile bicycle ride.

High temperature in Central Florida this afternoon was 96*, yet the Greenspeed is still holding 75*. The inverter did have to ramp up to 75-80% for awhile with about 600-700 total cfm from the air handler, but it's been comfy all day at my house!

Perhaps I could have gotten away with a 2-ton after all, but I'm thrilled that I stuck to my guns and downsized from the old 3.5-ton Rheem to the 3-ton Greenspeed. Most dealers refused to install less than a 4-ton in my 1827sf house!!!!!!

High temperature in Central Florida this afternoon was 96*, yet the Greenspeed is still holding 75*. The inverter did have to ramp up to 75-80% for awhile with about 600-700 total cfm from the air handler, but it's been comfy all day at my house!

Perhaps I could have gotten away with a 2-ton after all, but I'm thrilled that I stuck to my guns and downsized from the old 3.5-ton Rheem to the 3-ton Greenspeed. Most dealers refused to install less than a 4-ton in my 1827sf house!!!!!!

Sa WEET!!!

Glad to see that "from great risks comes great rewards" is holding true here. As I recall this was WAY bigger investment than you were first considering. That, when combined with the "downsizing" fear you were being fed by your local guys, meant the decision took huge guts.

(Turns out the 2 ton doesn't really turn down much lower than the 3 ton, so it probably would have only saved the difference in cost, not provided less cycling, more savings, or better comfort.)

Update for July 2013

Here's an update through my last FPL billing as of July 11, 2013. The hot, humid Central Florida summer season is well underway and I'm extremely pleased with my low electric bills, given that I now have two people living in my home instead of one! Greenspeed is great!

NOTE #1: 03/30/13 - 04/10/13: Had six family members visiting for Easter and four stayed on to help with garage sale and landscaping the following week. Extra daily baths, showers, dishwasher runs and hair dryer usage, cooking three meals a day, washer/dryer ran almost non-stop. They had all my doors and windows opened with A/C “off” for 12 hours a day while working between outdoors, the garage, the laundry, the kitchen, and cleaning out “junk” in closets. Outdoor temperature and humidity rose into the 80’s, Greenspeed “recovered” about 8 to 10 degrees each evening for sleep time.

NOTE #2: 06/10/13: My grandson moved in with me, so I'm expecting double the hot showers, dishwasher runs, cooking and washer/dryer usage throughout the summer. Hoping the FSEC retrogrades offset the increased power consumption related to a second resident.

Thanks, wow, lot of savings in that thermostat change! Or maybe not, 650 kwh for 90 days of discomfort (?). Looks like $20-25 a month? How uncomfortable was it? Worth it?

Hmmm. The grandson, if you had to guess, 200 kwh add?

When was the weatherization work? Do you recall seeing savings or comfort improvement from that?

Would you say this is meeting your expectations of savings? Do you recall what that expectation was?

Have you had any super hot days where the equipment didn't quite keep the place as comfortable as you would like (trouble keeping up)?

I believe you are becoming somewhat expert in your understanding of RH and dew point. (you might enjoy this http://bit.ly/comfortcalculator)
Are you using the equipment to drive RH down to low target levels? If so, does it allow you to have a higher comfortable temperature setting? (I'm trying to parse out operational strategies that consider managing RH and Mean Radiant Temperatures thereby allowing higher summer and lower winter settings with the same or better comfort, and if there is any meaningful savings opportunity in this thinking. I think you understand what I just said, but if it's gobbledy gook let me know where I failed.)

Thanks, wow, lot of savings in that thermostat change! Or maybe not, 650 kwh for 90 days of discomfort (?). Looks like $20-25 a month? How uncomfortable was it? Worth it?

I believe it was worth it. It wasn't all that uncomfortable, since the old system maintained humidity around 40%. I got used to it!

With the Greenspeed overcooling up to 3* to dehumidify, indoor RH% now hovers around 50-55%. The house is comfortable now with a daytime set-point of 75*. I do turn it down to 72* for sleeping.

Originally Posted by tedkidd

Hmmm. The grandson, if you had to guess, 200 kwh add?

I'd guess more like 400 kwh. He takes long, hot showers once or twice a day, while he sings to loud music.... like a teenage girl (lol)! I've actually been cooking (using the stovetop and the oven like a Grandma should) several times a day, instead of heating frozen dinners in the microwave. And the dishwasher runs at least 3 times a week instead of once very 2 weeks! Washing machine and dryer use is triple what it was! Vacuuming has quadrupled, or more, due to hair from the Grandson's new puppy.

Originally Posted by tedkidd

When was the weatherization work? Do you recall seeing savings or comfort improvement from that?

That work was done a week after the old Rheem was repaired (end of July/first of August 2012). It cooled better than it ever had until it finally died in mid-October, so I'm not sure how much to attribute to the added insulation and duct sealing.

Originally Posted by tedkidd

Would you say this is meeting your expectations of savings? Do you recall what that expectation was?

Absolutely! I'd expected between $400-600 a year savings, assuming only one occupant (me).

Originally Posted by tedkidd

Have you had any super hot days where the equipment didn't quite keep the place as comfortable as you would like (trouble keeping up)?

Super hot days.... YES (high of 96 last Sunday). Trouble keeping up.... not really. The foyer (surrounded by glass) was warmer than usual during the afternoon, but the living areas all remained comfortable. The unit does run at 100% of capacity during the afternoons on the super hot days, but slows down to normal (around 40%) as the sun goes down.

Update for August 2013

Here's an update through my last FPL billing as of August 12, 2013. The hot, humid Central Florida summer season is well underway and I'm extremely pleased with my low electric bills, given that I now have two people living in my home instead of one! Greenspeed is great!

NOTE #1: 03/30/13 - 04/10/13: Had six family members visiting for Easter and four stayed on to help with garage sale and landscaping the following week. Extra daily baths, showers, dishwasher runs and hair dryer usage, cooking three meals a day, washer/dryer ran almost non-stop. They had all my doors and windows opened with A/C “off” for 12 hours a day while working between outdoors, the garage, the laundry, the kitchen, and cleaning out “junk” in closets. Outdoor temperature and humidity rose into the 80’s, Greenspeed “recovered” about 8 to 10 degrees each evening for sleep time.

NOTE #2: 06/10/13: My grandson moved in with me... double the hot showers, triple the dishwasher runs, quadruple the cooking and washer/dryer usage. Not sure the FSEC retrogrades can offset the increased power consumption related to a second resident.

THREE-YEAR ELECTRIC USE COMPARISON

Graphical Comparison indicates a huge percentage reduction in electric use ( ATTACHMENT).
________________________ ... ... ________ _________
The Melbourne FL Cooling Degree Days (CDD) of 2013 are within ~2% of the average for 2011 & 2012.